... Report on the building and ornamental stones of Canada, vol. I-V (1912)
Parks, W. A. (William Arthur), 1868-1936, Canada. Mines Branch · Ottawa : Government printing bureau · leaf 232
cts:— Specific gravitj^ 2 • 656 Weight per cubic foot, lbs 165-374 Pore space, per cent 0 • 259 Ratio of absorption, per cent 0-098 Coefficient of saturation, one hour 0-37 two hours 0-50 Crushing strength, lbs. per sq. in 48984 • Traverse strength, lbs. per sq. in 3751 • Drilling factor, mm 1-4… … Monument of Nictaux granite, Bridgetown, N.S. 145 CHAPTER V. The Black Granites. Many of the dark coloured igneous rocks, such as diabase, diorite,gabbro, etc., are used for monumental purposes. The great toughness ofthis class of stone and the consequent difficulty of working has restrictedits…
Building stones
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